[Solved] Create a class Student with attributes name(String) and registrationNo(int)

Create a class Student with attributes name(String) and registrationNo(int) and a method show to display the attributes of the Student. Write a menu driven program with 2 choices to take the input of the student attributes and display the attributes.

Input Format

Your program should take the 2 choice as input. • If the first input will be 1 then also ask to user to enter the details of the student. If the entered registrationNo is negative, do not accept the input and prompt again to take new input until user will not entered the positive registrationNo. • If the first input will be 2 then display the default values of Student attributes separated by comma in the same line. • If the first input will be any other int value, display the message “Wrong Choice”.

Constraints

Student registrationNo should be positive value(excluding 0).

Output Format

Your program should display the attributes of Student or the message “Wrong Choice” as the User choice at the runtime.

Sample Input 0

1
John
10
Sample Output 0

John,10
Sample Input 1

2
Sample Output 1

null,0

Solution

import java.util.Scanner;

class Student {
    private String name;
    private int registrationNo;

    // Constructor to initialize the default values of attributes
    public Student() {
        this.name = null;
        this.registrationNo = 0;
    }

    // Method to display the attributes of the student
    public void show() {
        System.out.println(this.name + "," + this.registrationNo);
    }

    // Method to set the name of the student
    public void setName(String name) {
        this.name = name;
    }

    // Method to set the registration number of the student
    public void setRegistrationNo(int registrationNo) {
        this.registrationNo = registrationNo;
    }
}

public class Solution {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);

        // Create an instance of the Student class
        Student student = new Student();

        // Take the input choice from the user
        int choice = sc.nextInt();

        if (choice == 1) {
            // Take input details from the user
            String name = sc.next();
            student.setName(name);

            int registrationNo = 0;
            boolean validInput = false;
            while (!validInput) {
                try {
                    registrationNo = sc.nextInt();
                    if (registrationNo > 0) {
                        validInput = true;
                    } else {
                    }
                } catch (Exception e) {
                    sc.nextLine(); // consume the input buffer to prevent an infinite loop
                }
            }
            student.setRegistrationNo(registrationNo);
            // sauravhathi

            // Display the attributes of the student
            student.show();
        } else if (choice == 2) {
            // Display the default values of the student
            student.show();
        } else {
            System.out.println("Wrong Choice");
        }

        sc.close();
    }
}

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